Center Township is a township in Decatur County, Iowa, United States. As of the 2000 census, its population was 317.
Center Township covers an area of 33.11 square miles (85.74 square kilometers); of this, 0.42 square miles (1.08 square kilometers) or 1.26 percent is water. The stream of West Little River runs through this township.
The township contains one cemetery, Franklin.